Mircea Trofin 82ebbcfb05 [NFC][regalloc] Model weight normalization as a virtual ...

Continuing from D88499, we can now model the normalization function as a
virtual member of VirtRegAuxInfo. Note that the default
(normalizeSpillWeight) is also used stand-alone in RAGreedy.

Differential Revision: https://reviews.llvm.org/D88713

2020-10-05 11:33:07 -07:00

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